Volume
gal (UK)tomL
Convert imperial gallons (gal (UK)) to millilitres (mL).
Factor1 gal (UK) = 4546.09 mL
Converter
gal (UK)
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mL
Rendered to 6 significant figures.
Formula
Formula
mL = gal (UK) × 4546.09
Multiply any value in imperial gallons by 4546.09 to obtain the value in millilitres.
Worked example
Convert 1 gal (UK) to mL.
- 01Start with 1 gal (UK).
- 02Multiply by the conversion factor: 1 × 4546.09 = 4546.09 mL.
Result1 gal (UK) = 4546.09 mL
Conversion table
| gal (UK) | mL |
|---|---|
| 1 | 4546.1 |
| 2 | 9092.2 |
| 5 | 22730 |
| 10 | 45461 |
| 20 | 90922 |
| 50 | 2.2730e+5 |
| 100 | 4.5461e+5 |
| 200 | 9.0922e+5 |
| 500 | 2.2730e+6 |
| 1000 | 4.5461e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from gal (UK) to mL?
1 gal (UK) equals 4546.09 mL. To convert, multiply the value in imperial gallons by 4546.09.
How do I convert 1 gal (UK) to mL?
1 gal (UK) = 4546.09 mL. For any value, multiply by 4546.09.
How do I convert mL back to gal (UK)?
Divide by the same factor — or equivalently, multiply by 0.0002199692. So 1 mL = 0.000219969 gal (UK).
When would I need to convert imperial gallon to millilitre?
Volume conversions are used for tank sizing, batch calculations, and bridging between vendor specs (gallons, barrels, ft³) and process documentation (m³, litres).
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).